EP 1197695 A2 20020417 - Spool valve
Title (en)
Spool valve
Title (de)
Schieberventil
Title (fr)
Tiroir
Publication
Application
Priority
- JP 2000312988 A 20001013
- JP 2000322831 A 20001023
Abstract (en)
A spool valve includes a groove (22) defined in the spool (17) and a notch (34). A line A is drawn to extend through a communication zone a provided upon communication of the notch (34) which is disposed at a distal end of the line A and defined in a step of a spool with an input port (13) to form a 69 DEG angle with respect to an L-axis. Fluid flowing into the groove through the communication zone a upon communication of the notch with the input port, does not collide with other portions of the spool before colliding with a bottom of the groove. Therefore, the flow of the fluid along the L-axis causes a flow force applied to the spool to be suppressed resulting in a decreased load on an actuator. The notch makes it is possible to ensure the stable operation of a spool valve, while preventing the self-induced vibration of the spool. <IMAGE>
IPC 1-7
IPC 8 full level
F16K 11/07 (2006.01); F16K 31/06 (2006.01)
CPC (source: EP US)
F16K 11/0716 (2013.01 - EP US); F16K 31/0613 (2013.01 - EP US); Y10T 137/8671 (2015.04 - EP US); Y10T 137/86734 (2015.04 - EP US); Y10T 137/86767 (2015.04 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1197695 A2 20020417; EP 1197695 A3 20030416; MX PA01010314 A 20020820; US 2002079002 A1 20020627; US 6615868 B2 20030909
DOCDB simple family (application)
EP 01124467 A 20011011; MX PA01010314 A 20011012; US 97531001 A 20011012